The environmental engineering industry in Alabama focuses on creating sustainable solutions to protect natural resources. Companies in this field work on tasks such as waste management, pollution control, and site remediation. Confronting issues like climate change and resource scarcity, these firms play a crucial role in regulatory compliance while implementing innovative technologies. With increasing emphasis on green initiatives, the industry is witnessing a surge in demand for environmentally-friendly engineering practices. Insights reveal that firms are not only prioritizing local needs but are adapting to global trends aimed at achieving greater sustainability and environmental restoration.


The companies featured in this list reflect a range of business sizes and specializations, with origins dating back to the mid-20th century. Predominantly located in urban centers like Mobile and Birmingham, these firms cater to various sectors, including municipal, federal, and private clients. Specializations include environmental consulting, geotechnical engineering, and compliance auditing. With employee counts varying from under ten to over five thousand, the firms play distinct roles in enhancing Alabama's infrastructure while focusing on ecological preservation.


Continue reading to explore the prominent environmental engineering companies in Alabama.


Top 20 Environmental Engineering Companies in Alabama


1. Volkert, Inc.

  • Website: volkert.com
  • Ownership type: Private
  • Headquarters: Mobile, Alabama, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1925
  • Headcount: 1001-5000
  • LinkedIn: volkert-inc.

Volkert, Inc., founded in 1925 and based in Mobile, Alabama, is a private consulting firm that specializes in engineering, environmental consulting, program management, and construction services. With a workforce of approximately 1,163 employees, Volkert serves municipalities and private developers, providing comprehensive solutions for infrastructure projects. Their focus on sustainability and regulatory compliance is evident in their environmental services, which include ecological assessments, permitting, and habitat restoration. Volkert's expertise extends to transportation, energy, and water resource management, showcasing their involvement in critical infrastructure development. The firm emphasizes corporate social responsibility, actively engaging in community development and environmental stewardship. Their long-standing history and commitment to quality make them a significant player in the environmental engineering sector.


2. Goodwyn Mills Cawood (GMC)

  • Website: gmcnetwork.com
  • Ownership type: Private
  • Headquarters: Montgomery, Alabama, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1947
  • Headcount: 501-1000
  • LinkedIn: goodwyn-mills-and-cawood

Goodwyn Mills Cawood (GMC) is an architecture and engineering firm based in Montgomery, Alabama, founded in 1947. With a workforce of approximately 582 employees, GMC provides a wide array of services, including engineering, architecture, interior design, and environmental consulting. The firm serves municipalities, educational institutions, and various industries, focusing on infrastructure development and community planning. GMC's engineering services cover critical areas such as water resources, wastewater treatment, and stormwater management, showcasing their expertise in environmental engineering. Their commitment to ecological restoration and mitigation further underscores their role in promoting sustainable practices within the communities they serve. GMC operates multiple offices across the Southeastern United States, allowing them to effectively address local needs and regulations.


3. Three Notch Group

  • Website: cdge.com
  • Ownership type: Private
  • Headquarters: Andalusia, Alabama, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1946
  • Headcount: 201-500
  • LinkedIn: cdg-engineers-%26-associates

Three Notch Group, known as CDG, Inc., is a private engineering firm based in Andalusia, Alabama, founded in 1946. With a workforce of over 200 employees, the company specializes in providing consulting and engineering services to public entities, private enterprises, and the petroleum industry. Their expertise lies in navigating regulatory compliance and offering environmental consulting services, which are critical for ensuring project sustainability. CDG's service offerings include civil/site development, construction engineering, emergency response management, and notably, environmental consulting. They have built a reputation for effectively managing environmental concerns, conducting compliance audits, and providing valuable insights to clients across various sectors. Their commitment to environmental stewardship is evident in their proactive approach to helping clients mitigate risks associated with environmental regulations.


4. TTL, Inc.

  • Website: ttlusa.com
  • Ownership type: Private
  • Headquarters: Tuscaloosa, Alabama, United States (USA)
  • Employee distribution: United States (USA) 99%
  • Founded year: 1964
  • Headcount: 201-500
  • LinkedIn: ttl-usa

TTL, Inc., founded in 1964 and based in Tuscaloosa, Alabama, is a private engineering firm that provides integrated infrastructure solutions for both public and private clients. With a workforce of approximately 450 employees, TTL offers a wide range of services, including civil, transportation, and geotechnical engineering, as well as environmental consulting. The firm operates primarily across the Southern United States, tackling complex engineering challenges while ensuring compliance with environmental regulations. TTL's commitment to environmental consulting is evident in their projects, such as the construction of the Homewood Suites hotel on a site that previously served as a landfill. Their team includes professionals with extensive knowledge of environmental regulations, which enhances their ability to navigate the complexities of environmental compliance. Recently, TTL was recognized as one of the Top 500 design firms by Engineering News-Record, marking a significant milestone in their growth and industry presence.


5. Thompson Engineering

  • Website: thompsonengineering.com
  • Ownership type: Private
  • Headquarters: Mobile, Alabama, United States (USA)
  • Employee distribution: United States (USA) 98%, Other 2%
  • Founded year: 1953
  • Headcount: 201-500
  • LinkedIn: thompsonengineering

Thompson Engineering, founded in 1953 and based in Mobile, Alabama, is a private engineering firm with a workforce of approximately 383 employees. The company specializes in a broad spectrum of engineering services, including civil, structural, and environmental engineering, as well as construction management. Their environmental engineering services focus on compliance, assessments, and stormwater management, which are critical in today's regulatory environment. Thompson Engineering has built a reputation for supporting clients in various sectors, such as industrial, commercial, and federal markets, by providing essential services that ensure project success while adhering to environmental regulations. Their training programs for stormwater pollution prevention highlight their proactive approach to environmental issues, equipping professionals with the knowledge to manage compliance effectively. The firm operates primarily in the Southeastern United States, contributing to infrastructure and community development projects that prioritize sustainability and environmental protection.


6. LBYD Engineers

  • Website: lbyd.com
  • Ownership type: Private
  • Headquarters: Birmingham, Alabama, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1973
  • Headcount: 51-200
  • LinkedIn: lbyd-inc.

LBYD Engineers, a subsidiary of North Wind Group, operates out of Birmingham, Alabama, and has been active in the environmental engineering sector since its founding in 1973. The company specializes in providing a wide range of services that tackle complex environmental challenges. Their expertise includes environmental compliance, remediation, and engineering solutions tailored to meet the needs of federal, state, and local agencies, as well as private industry clients. LBYD Engineers has built a reputation for effectively managing projects that require adherence to stringent regulations and for delivering innovative solutions in challenging environments. Their work often involves collaboration with various governmental bodies and private entities, ensuring that they remain relevant and responsive to the evolving demands of the industry.


7. HGS Engineering, Inc.

  • Website: hgsengineeringinc.com
  • Ownership type: Private
  • Headquarters: Anniston, Alabama, United States (USA)
  • Employee distribution: United States (USA) 93%, Finland 7%
  • Founded year: 1998
  • Headcount: 51-200
  • LinkedIn: hgs-engineering-inc

HGS Engineering, Inc., founded in 1998 and based in Anniston, Alabama, is a private consulting firm that specializes in engineering and environmental services. The company offers a wide range of services, including environmental engineering, health and safety consulting, and IT services. HGS Engineering is particularly noted for its expertise in helping clients navigate compliance and safety challenges across various sectors. They serve a mix of federal, state, and local government clients, as well as private industry, demonstrating their adaptability and broad reach. The firm is recognized for its commitment to addressing critical environmental issues, such as air quality, water safety, and hazardous waste management. HGS also operates a CDC-ELITE certified laboratory, which positions them as a key player in microbiological analysis in Alabama. Their team comprises professionals with extensive experience in environmental compliance, safety audits, and project management, further solidifying their role in the environmental engineering industry.


8. InSite Engineering LLC

  • Website: insiteengineering.org
  • Ownership type: Private
  • Headquarters: Hoover, Alabama, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: February 2025
  • Founded year: 2005
  • Headcount: 1-10
  • LinkedIn: insiteengineering

InSite Engineering LLC, founded in 2005 and based in Hoover, Alabama, is a private engineering firm dedicated to providing high-quality services in water and wastewater management, civil engineering, and PFAS remediation. With a small team of around 26 employees, the company prides itself on its customer-focused approach and aims to improve the quality of life through sustainable infrastructure design. InSite Engineering has made a notable impact in the industry, particularly with its involvement in the world's largest PFAS mitigation project, which began operations in 2021. This project highlights their expertise in navigating complex environmental regulations and delivering effective solutions for water treatment. The firm serves a range of clients, including municipalities, utilities, and private developers, primarily in Alabama and surrounding states, and is expanding its reach into Texas and Louisiana. Their mission reflects a commitment to integrity and responsiveness, ensuring that they meet the needs of their clients while addressing critical environmental issues.


9. Gulf Coast Underground


Gulf Coast Underground, founded in 2003 and based in Theodore, Alabama, is a private construction and engineering firm with a workforce of approximately 38 employees. The company specializes in design-build solutions primarily for wastewater management and infrastructure projects. They serve a range of clients, including municipalities and industrial partners, across several southeastern states in the U.S. Their services include sanitary sewer evaluation surveys, engineering, and various design-build projects. Gulf Coast Underground is committed to innovative and sustainable practices, aiming to provide long-term solutions that enhance the efficiency and reliability of critical infrastructure. Their engineering capabilities are complemented by a focus on field expertise, ensuring that projects are not only well-designed but also practical and cost-effective. The firm has established a reputation for professionalism and dependability, making it a trusted resource in the environmental engineering sector.


10. Poly, Inc.

  • Website: poly-inc.com
  • Ownership type: Private
  • Headquarters: Dothan, Alabama, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1959
  • Headcount: 51-200
  • LinkedIn: poly-inc

Poly, Inc., established in 1959 and headquartered in Dothan, Alabama, is an engineering and architecture firm that specializes in a range of services, including architectural design, engineering solutions, and environmental consulting. With a workforce of approximately 51-200 employees, the company has built a reputation for delivering high-quality projects tailored to meet the specific needs of municipal clients and government agencies. Poly, Inc. has a notable focus on environmental services, offering expertise in areas such as air and water permitting, environmental assessments, and compliance consulting. Their commitment to sustainability is reflected in their design philosophy, which emphasizes energy-efficient and environmentally responsible practices. Over the years, Poly has successfully completed numerous projects, including the design of reclaimed water pipelines and environmental audits, showcasing their capability in addressing complex environmental challenges. The firm operates with a client-first approach, ensuring that their solutions are both effective and efficient, thereby fostering long-term partnerships with their clients.


11. Driven Engineering, Inc.(trademarked)


Driven Engineering, Inc. is a consulting engineering firm based in Semmes, Alabama, established in 2006. The company specializes in civil design, environmental consulting, and infrastructure development. With a team of 24 employees, Driven Engineering serves a variety of clients, including federal agencies, municipalities, and private sector clients. Their services include environmental consulting, which addresses issues related to chemicals and constituents that can negatively impact both humans and the environment. The firm is also involved in water resource management, road and infrastructure design, and geographic information systems (GIS). Driven Engineering operates under a commitment to integrity and excellence, guided by Christian principles, and is recognized as a small business with various certifications, including SDB, WBE, and DBE in multiple Southeast states. They have not reported any funding, indicating they operate as a self-sustained entity.


12. Gulf Coast Underground

  • Website: gogcu.com
  • Ownership type: Private
  • Headquarters: Theodore, Alabama, United States (USA)
  • Founded year: 2003
  • Headcount: 51-200
  • LinkedIn: chempro-services

Gulf Coast Underground, founded in 2003 and based in Theodore, Alabama, is a private construction and engineering firm that specializes in infrastructure solutions, particularly in the area of wastewater management. The company provides a range of services including Design-Build projects and sanitary sewer evaluations, catering to municipalities and industrial partners across several states. With a workforce of approximately 31 employees, Gulf Coast Underground has established itself as a reliable partner in the engineering sector. Their operations are characterized by a commitment to innovative processes and environmental sustainability, aiming to deliver long-term solutions that meet the needs of their clients while minimizing environmental impact. The firm is licensed to operate in multiple states, showcasing its capability to handle projects across a broad geographic area. Their mission is to be recognized as a trusted technical resource in critical infrastructure, focusing on exceeding customer expectations through professionalism and cost-effective solutions.


13. Enersolv Corporation

  • Website: enersolv.com
  • Ownership type: Private
  • Headquarters: Decatur, Alabama, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1999
  • Headcount: 11-50
  • LinkedIn: enersolv-corporation

Enersolv Corporation, founded in 1999 and based in Decatur, Alabama, is an environmental consulting firm that provides a range of testing and engineering solutions. The company serves various clients, including industries, commercial entities, and municipalities across the Southeastern United States. Enersolv's services are designed to assist clients in meeting environmental regulatory requirements, particularly those set by the EPA. Their expertise spans air quality assessments, water management, waste handling, and PFAS inspections, showcasing their capability to address pressing environmental issues. Enersolv prides itself on maintaining high standards of service and quality, ensuring that their clients can effectively manage environmental risks while enhancing community health and safety. The firm has established long-term relationships within the community, which further solidifies its role as a trusted partner in environmental management.


14. Gtec

  • Website: gteccorp.com
  • Ownership type: Private
  • Headquarters: Huntsville, Alabama, United States (USA)
  • Employee distribution: United States (USA) 93%, Brazil 7%
  • Founded year: 2020
  • Headcount: 11-50
  • LinkedIn: gtec-llc

Gtec, founded in 2020 and based in Huntsville, Alabama, is a private engineering consulting firm that specializes in geotechnical engineering, environmental consulting, and construction services. With a team of experienced professionals, Gtec provides essential assessments and testing for construction projects, ensuring compliance with environmental regulations and project integrity. Their environmental services include Phase I and II Environmental Site Assessments, soil and groundwater assessments, and remediation efforts, demonstrating their commitment to addressing environmental challenges. Gtec's focus on quality control and assurance in construction further complements their environmental work, making them a valuable partner for clients in both the construction and environmental sectors. The firm aims to grow alongside the Huntsville community, contributing to local development while maintaining a strong emphasis on environmental stewardship.


15. PPM Consultants, Inc.

  • Website: ppmco.com
  • Ownership type: Corporate
  • Headquarters: Birmingham, Alabama, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: November 2016
  • Founded year: 1994
  • Headcount: 51-200
  • LinkedIn: ppm-consultants-inc-

PPM Consultants, Inc. is an environmental consulting firm based in Birmingham, Alabama, specializing in compliance and management services. Established in 1994, the company has built a strong reputation for assisting clients across various sectors, including energy, manufacturing, and commercial enterprises. PPM provides a wide array of services designed to address environmental challenges, such as air, water, and waste compliance, environmental due diligence, and soil and groundwater assessment and remediation. Their expertise extends to brownfields redevelopment and legal environmental support services, showcasing their comprehensive approach to environmental management. With a dedicated team of professionals, PPM Consultants aims to simplify complex environmental issues for their clients, ensuring regulatory compliance and risk management. The firm operates primarily in the Southeastern U.S. but offers advisory services nationwide, reflecting their commitment to addressing environmental concerns across a broad geographic area.


16. Southern Earth Sciences, Inc.

  • Website: soearth.com
  • Ownership type: Private
  • Headquarters: Mobile, Alabama, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1976
  • Headcount: 51-200
  • LinkedIn: southern-earth-sciences-inc.

Southern Earth Sciences, Inc. (SES), founded in 1976, is a consulting firm based in Mobile, Alabama, that specializes in geotechnical engineering, environmental services, and construction materials testing. With a workforce of approximately 94 employees, SES operates multiple offices across Alabama, Florida, Louisiana, and Mississippi, providing essential services to construction companies and government agencies. The firm is dedicated to addressing site-specific challenges and ensuring compliance with state and federal environmental regulations. SES offers a comprehensive range of environmental services, including site assessments, landfill management, and hazardous materials services. Their laboratories hold various accreditations, ensuring high standards in testing and analysis. Over the years, SES has participated in numerous significant projects, contributing to the development and safety of infrastructure in the region. Their commitment to safety and quality is evident in their operational practices and the recognition they have received for their safety records.


17. BHATE Geosciences

  • Website: bhate-geo.com
  • Ownership type: Private
  • Headquarters: Birmingham, Alabama, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1975
  • Headcount: 51-200
  • LinkedIn: bhate-geosciences-corporation

BHATE Geosciences, founded in 1975 and based in Birmingham, Alabama, is a private engineering firm with a workforce of approximately 53 employees. The company specializes in geotechnical engineering, environmental consulting, and materials testing. They provide a range of services that include site assessments, environmental compliance, and construction integrity solutions. BHATE serves clients across various sectors, including government, healthcare, and infrastructure, ensuring that projects adhere to safety and regulatory standards. Their environmental services team is well-regarded for delivering cost-effective solutions to assess and mitigate environmental risks, working closely with regulatory agencies to maintain compliance. With a strong emphasis on practical design solutions and a commitment to client success, BHATE has built a reputation for reliability and expertise in the environmental engineering field.


18. PELA GeoEnvironmental

  • Website: pela.com
  • Ownership type: Family Owned
  • Headquarters: Tuscaloosa, Alabama, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1961
  • Headcount: 11-50
  • LinkedIn: pela-geoenvironmental

PELA GeoEnvironmental, based in Tuscaloosa, Alabama, is an environmental consulting firm that has been operational since 1961. The company specializes in geology, hydrology, and environmental assessments, providing a wide range of services to businesses and organizations. Their offerings include environmental site assessments, regulatory compliance, and litigation support, which are crucial for managing environmental risks and ensuring adherence to regulations. PELA has built a reputation for its expertise in karst hydrogeology, particularly in the study of sinkholes and groundwater management. The firm has worked on numerous projects across the United States, including assessments of brownfield and greenfield sites, and has been involved in significant remediation efforts at Superfund sites. Their professionals are licensed and certified, ensuring high standards in their work. PELA's commitment to staying updated with regulatory changes has fostered long-term relationships with clients, including private companies and various regulatory agencies.


19. Sain Engineering Associates Inc.

  • Website: saineng.com
  • Ownership type: Private
  • Headquarters: Birmingham, Alabama, United States (USA)
  • Employee distribution: United States (USA) 81%, Japan 7%, Puerto Rico 3%, Other 9%
  • Founded year: 1987
  • Headcount: 51-200
  • LinkedIn: sain-engineering-associates-inc.

Sain Engineering Associates Inc., based in Birmingham, Alabama, is a private energy consulting and engineering services firm founded in 1987. With a workforce of 101 employees, the company has established itself as a key player in the energy sector, providing comprehensive solutions that prioritize energy efficiency and sustainability. Their clientele spans government, commercial, and educational sectors, reflecting their capability to address a variety of energy-related challenges. Sain Engineering's services include energy assessments, building optimization, and on-site energy management, all aimed at helping clients achieve operational excellence and cost savings. The firm also emphasizes resilience and sustainability, offering alternative and renewable energy assessment services to integrate innovative solutions into clients' energy portfolios. Their commitment to energy management and optimization positions them as a significant contributor to environmental engineering efforts.


20. BECC, Inc.

  • Website: beccinc.com
  • Ownership type: Private
  • Headquarters: Birmingham, Alabama, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1992
  • Headcount: 11-50
  • LinkedIn: becc-inc-

BECC, Inc., based in Birmingham, Alabama, is a private engineering firm founded in 1992. With a team of 16 professionals, the company specializes in geotechnical and environmental engineering services. Their expertise includes site assessments, materials testing, and special inspections, catering to clients in the construction and environmental sectors. BECC, Inc. is dedicated to providing innovative and cost-effective solutions to complex underground challenges. They are well-versed in regulatory compliance, assisting clients in meeting state and federal environmental requirements. The firm is AASHTO accredited and maintains certifications from various agencies, ensuring high standards in their testing and inspection services. Their extensive experience and commitment to quality have established them as a reliable partner in the industry.



Environmental Engineering Insights: Key Companies in Alabama


CompanyHeadquarterSizeFoundedOwnership
Volkert, Inc.Mobile, Alabama, United States (USA)1001-50001925Private
Goodwyn Mills Cawood (GMC)Montgomery, Alabama, United States (USA)501-10001947Private
Three Notch GroupAndalusia, Alabama, United States (USA)201-5001946Private
TTL, Inc.Tuscaloosa, Alabama, United States (USA)201-5001964Private
Thompson EngineeringMobile, Alabama, United States (USA)201-5001953Private
LBYD EngineersBirmingham, Alabama, United States (USA)51-2001973Private
HGS Engineering, Inc.Anniston, Alabama, United States (USA)51-2001998Private
InSite Engineering LLCHoover, Alabama, United States (USA)1-102005Private
Gulf Coast UndergroundTheodore, Alabama, United States (USA)51-2002003Private
Poly, Inc.Dothan, Alabama, United States (USA)51-2001959Private
Driven Engineering, Inc.(trademarked)Semmes, Alabama, United States (USA)11-502006Private
Gulf Coast UndergroundTheodore, Alabama, United States (USA)51-2002003Private
Enersolv CorporationDecatur, Alabama, United States (USA)11-501999Private
GtecHuntsville, Alabama, United States (USA)11-502020Private
PPM Consultants, Inc.Birmingham, Alabama, United States (USA)51-2001994Corporate
Southern Earth Sciences, Inc.Mobile, Alabama, United States (USA)51-2001976Private
BHATE GeosciencesBirmingham, Alabama, United States (USA)51-2001975Private
PELA GeoEnvironmentalTuscaloosa, Alabama, United States (USA)11-501961Family Owned
Sain Engineering Associates Inc.Birmingham, Alabama, United States (USA)51-2001987Private
BECC, Inc.Birmingham, Alabama, United States (USA)11-501992Private


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